Experimental characterization of the transfer function for a Silver-dielectric superlens | Zendy

Ciaran P. Moore | Zendy; Richard J. Blaikie | Zendy

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Experimental characterization of the transfer function for a Silver-dielectric superlens

Author(s) -

Ciaran P. Moore,

Richard J. Blaikie

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.006412

Subject(s) - superlens , optical transfer function , optics , materials science , spatial frequency , wavelength , dielectric , point spread function , characterization (materials science) , image resolution , optoelectronics , refractive index , physics

We describe a technique for experimentally determining the spatial-frequency modulation transfer function for near-field super-resolution imaging systems and present such a modulation transfer function for a 20|40|20 nm poly(vinyl alcohol)~(PVA)|Silver|PVA superlens exposed to 365 nm wavelength (i-line) radiation through a 50-nm thick tungsten mask. An extensive spectral characterization is achieved from only two exposures, with transmission coefficients determined for spatial frequencies as high as 13 µm-1, corresponding to λ / 4.75. The resulting transfer function is in good agreement with analytical models that incorporate the effects of mask-superlens interactions.

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